← Back to dex
Epic exoplanet 57 EP

BEBOP-4 AB b

RA 192.5773° · Dec 26.1595° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges
57 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Circumbinary (orbits both stars) +14
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
Total score 57

21 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Circumbinary (orbits both stars) · +14
  • Orbits a Sun-like star · +8

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

What it actually is

  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 9.6 you'll want a small backyard telescope.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 13.4 million years at Voyager 1's speed (17 km/s).

Properties

circumbinary
yes
discovery facility
Haute-Provence Observatory
discovery method
Radial Velocity
discovery year
2025
dist ly
764.1639
eccentricity
0.428
eq temp k
239.44
habitable zone
yes
host star teff
5701.43
insolation
0.5477
mag
9.646
mass earth
8358.8871
name
BEBOP-4 AB b
orbital period days
1823.5
semi major au
3.634
spect
G3 V
sys num planets
1
sys num stars
2

About BEBOP-4 AB b

BEBOP-4 AB b is an epic exoplanet. It lies about 764.2 light-years from Earth, shines at apparent magnitude 9.65, has spectral type G3 V and has an equilibrium temperature near 239 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 9.65, a small backyard telescope will bring it into view.

Like any astronomical target, BEBOP-4 AB b is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why BEBOP-4 AB b is an epic exoplanet

BEBOP-4 AB b scores 57 points on Spacedle's rarity scale, which places it in the epic tier. Another 21 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Circumbinary (orbits both stars) and Orbits a Sun-like star — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.